I'll google Ouroboros and take my conclusions when I read it.

He's Howl/Howell Jenkins/Pendragon. The main character of Howl's Moving Castle, which is the latest Ghibli Studios anime movie (I'll sound like comercials: from the guys behind Spirited Away), and it was based in a fantasy novel by Diana Wynne Jones.

The book is better. I read a piratey version in doc format.